<template>
  <div class="login_container">
    <div class="login_box">
<!--      头像-->
      <div class="avatar_box">
        <img src="../assets/logo.png">
      </div>
<!--      表单-->
        <el-form ref="loginFormRef" label-width="0px" class="login_form" :model="loginForm" :rules="loginFormRules">
<!--          用户名-->
          <el-form-item prop="username">
            <el-input v-model="loginForm.username" prefix-icon="iconfont icon-user" placeholder="请输入用户名"></el-input>
          </el-form-item>
<!--          密码-->
          <el-form-item prop="password">
            <el-input v-model="loginForm.password" prefix-icon="iconfont icon-3702mima" type="password" placeholder="请输入密码"></el-input>
          </el-form-item>
<!--          按钮-->
          <el-form-item class="btns">
            <el-button type="primary" @click="login">登录</el-button>
            <el-button type="info" @click="resetLoginForm">重置</el-button>
          </el-form-item>
        </el-form>
    </div>
  </div>
</template>

<script>
export default {
  name: 'Login',
  data () {
    return {
      // 登陆表单数据绑定对象
      loginForm: {
        username: 'admin',
        password: '123456'
      },
      // 表单验证规则
      loginFormRules: {
        // 验证用户名
        username: [
          {
            required: true,
            message: '请输入用户名',
            trigger: 'blur'
          },
          {
            min: 3,
            max: 12,
            message: '用户名应为3-12个字符',
            trigger: 'blur'
          }
        ],
        // 验证密码
        password: [
          {
            required: true,
            message: '请输入密码',
            trigger: 'blur'
          },
          {
            min: 6,
            max: 12,
            message: '密码长度应在6-12位',
            trigger: 'blur'
          }
        ]
      }
    }
  },
  methods: {
    // 重置表单
    resetLoginForm () {
      this.$refs.loginFormRef.resetFields()
    },
    // 登录，验证数据,根据验证规则验证
    login () {
      this.$refs.loginFormRef.validate(async (valid) => {
        // eslint-disable-next-line no-useless-return
        if (!valid) return
        const { data: result } = await this.$http.post('login', this.loginForm)
        if (result.meta.status !== 200) {
          return this.$message.error({ showClose: true, message: '登陆失败' })
        } else {
          this.$message.success('登陆成功')
          // 登录成功保存服务器返回的token
          window.sessionStorage.setItem('token', result.data.token)
          this.$router.push('/home')
        }
      })
    }
  }
}
</script>

<style lang="less" scoped>
.login_container{
  background-color: #2b4b6b;
  height: 100%;
}
.login_box{
  width: 450px;
  height: 300px;
  background-color: #fff;
  border-radius: 3px;
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%,-50%);
}
.avatar_box{
  height: 130px;
  width: 130px;
  border: 1px solid #eee;
  border-radius: 50%;
  padding: 10px;
  box-shadow: 0 0 10px #ddd;
  position: absolute;
  left: 50%;
  top: -50%;
  transform: translate(-50%,50%);
  background-color: #fff;
  img{
    width: 100%;
    height: 100%;
    background-color: #eee;
    border-radius: 50%;
  }
}
.btns{
  display: flex;
  justify-content: flex-end;
}
.login_form{
  position: absolute;
  bottom: 0;
  width: 100%;
  padding: 0 20px ;
  box-sizing: border-box;
}
</style>
